动词
中文翻译：以防
同义词：
['be prepared for', 'in case']
例句：
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1.In case of emergency, we need to have our phones with us.
万一发生紧急情况，我们需要随身携带手机。
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2. She was in case the meeting went longer than expected.
她准备会议可能会比预期更长。
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3. In case you missed the last train, there's a bus leaving from the station at 6:00.
如果你错过了最后一趟火车，从车站出发的公共汽车将在6点发车。